Machine for feeling the bark from short logs intended for the manufacture of wood-pulp and the like.



r P. c. S CHAANNINGH MACHINE FOR FEELING THE BARK FROM SHORT LOGSINTENDED FOR THE MANUFACTURE OF I W000 PULP AND THE LIKE,

I I APPLICATION FILED JUNE a, 1915. 1,25%,362 Patented Jan. 22, 1918.

Inventor.-

P G. S :11 manning iii WEBER CHRISTIAN SCI-TAANNING, 9F VINDEREN, Flt.CHRTSTTANL-h, NURW'AY, ASSTGNOR, BY DIRECT AND BEES-NE ASSIGNMENTS, T0ll", 8!, A. JENSEN DAHL, 0F CI'IRISTIATTTA, NOEW'AY, A 061*? SIEETIHG03E Hfii'lhldllil JENSEN AND KNUD DAHL.

MACHHHE FQR FEELING BARK EFlt'fllii SHORT EGGS INTENDED FGfr't THEIJTA'NUFZLC- TUE-1E GT 'WOGB PULZ E .lhll'i THE LTKE.

Application filed June 3, with.

a specification.

In the Wet-peeling of bark from shortlogs intended for the manufactureof Wood pulp essentially tWo different systems of peeling machines havebeen used hitherto. In one system a large iron plate drum With hollowtrunnions is used, through Which cir-- culates constantly Water, Whichpasses the short-logs Within the drum, the logs rushing and rubbingincessantly upon each other. After the lapseof a certain time peeling iscompleted, the drum is emptied and again filled. The drawback of this machine is partly that the operation is not continuous and partly that thelogs are Worked up in their ends, so that they get the resemblance of apaint-brush.

In the other system a long horizontal. drum of angle iron is used whichis open at both ends and mounted in a basin partly filled with Water.The drum rests upon rolls and is rotated by means of a gearing Therolls, hoWei er, operate submerged in Water, and on account hereof it ispractically im possible to get them rotated, the more be cause barkWaste accumulates around them. The rolls therefore stop after a shorttime and are then Worn at the contacting point with the drum, untilconcave surfaces have been forined Which still more prevent a con tinuedgood operation. The machine then. must be subjected to repairs,

The present invention consists in an arrangement, by means of which thementioned drawbacks in machines of the las named system are prevented.The invention. is illustrated in the accompanying drawing, in Which:

Figure l is a side elevation, partly in. section, and Fig. 2 is a crosssection of the ma chine. The drum is shovvndiagrammati cally.

As shown in the drawing the usual bark specification of LettersIi-atent.

peeling drum -lreceives the short-lo Q at one end and delivers thepeeled l. s continuously from the other end, .QlllS drum is not, ashitherto arranged in the basin 3 so as to rest upon submerged rolls, butit is suspended in the lower of Wires or chains -4. pasing over rolls -5arranged in the open air at a suitable height above the drum. Theserolls are mounted. on shafts -6-- which consequently rest in bearings 7above the Water so that they can be lubricated and inspected just as anyother hearing. The rolls -5- in such case can simultaneously transferthe rotation to the drum through the chains the shafts driven by pulleys8 or the like. Thereby the Whole machinery simplified, and at the sametime its s driving cannot more be subjected to the a; fluence of barkWaste, Water, rust or the like. The machine also requires only a smalldriving power. Besides the cleaning of the basin from bark Waste cantake place chiringthe operation of the machine, because its bottom nowcontains no bearings,

rolls or other machine elements.

Having now described my invention, What T claim as new and desire tosecure by Let ters Patent is:

1. In log barking machines, a Water tank, a substantially cylindrical.perforated barle ing drum in said Water tank, annular guiding devices onsaid barking drum, a supporting frame, substantially parallel laterallyseparated suspending drive shafts mounted on said frame, alined driverolls mounted on said shafts to cooperate with said guiding devices onsaid barking drum, and endless chain suspending members engaging saidsuspending guide rolls and said guiding devices to suspend and rotatesaid barking drum Within said tank while allovring slight lateralmovement and vibration of said drums. the opposite depending runs ofsaid suspending members being at least substantially as far separatedadjacent said guide rolls as adjacent said guiding devices.

2. in log barking machines, a Water tank, a substantially cylindricalopen ended perforated barking drum in said Water tank,

grooved tires on said barking drum, a sup.

ll ii ice - so that their outside peripheral faces are substantiallyvertically above the lateral portions of the grooved tires of saidbarking drum, endless flexible suspending members engaging saidsuspending guide rolls and said grooved tires to suspend and rotate said'13 barking drum Within said tank.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

PEDER CHRISTIAN SCHAANNING.

Witnesses:

AXER LAHN, MAGERO BUGGE.

